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4. The area of triangle is 80 cm?. If the height of the triangle is 6 cin less than its base,
find the base and its height.
A. b = 20 cm, h = 16 cm
C. b=35 cm, h = 31 cm
B. b= 10 cm, h = 6 cm
D. b = 16 cm, h = 10 cm​